/Engine/Source/Developer/AssetTools/Public/AssetViewUtils.h
A helper function for folder drag/drop which loads all assets in a path (including sub-paths) and returns the assets found
namespace AssetViewUtils { bool AssetViewUtils::PrepareFoldersForDragDrop ( const [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & SourcePathNames, [TMap](API\Runtime\Core\Containers\TMap)< [FString](API\Runtime\Core\Containers\FString), [TArray](API\Runtime\Core\Containers\TArray)< [UObject](API\Runtime\CoreUObject\UObject\UObject) * > > & OutSourcePathToLoadedAssets ) }